Combat

Not much is known about the combat system in Kingdom Hearts III. The developers have said that it will draw from the two main entries as well as Kingdom Hearts: Birth by Sleep and Kingdom Hearts: Dream Drop Distance.

From the trailer we can see the return of the traditional command menu, HP and MP meters, and the Drive Form meter as well. It is also worth noting that your allies are now displayed next to Sora's icon rather than above.

From the D23 Expo in Japan, Square Enix released a new trailer featuring early develepment on Kingdom Hearts 3's combat. The trailer shows off 2 of Sora's 3 confirmed combat mechanics new to Kingdom Hearts 3, Keyblade Transformation and Attraction Flow.

Keyblade Transformation shows Sora's to ability to transform his Keyblade into 2 guns, spinning around unleashing a barrage of fireballs towards his enemies. Most players would notice the Command Menu looks like a mechanic from previous games like KH3D and Kingdom Hearts Birth By Sleep known as the Command Styles. The Keyblade Transformations are different for every Keyblade. Like the protagonists from Birth By Sleep, Sora has learnt to transform his Keyblade in a similar manner, further suggesting that a progression system, like in BBS, could be returning.

Attaction Flow is the "evolution" of the Free Flow mechanic found in KH3D. It is said to allow Sora to be able to direct his attacks anyway he wishes, like summoning well known Disney Attractions.